import java.util.Scanner;

public class C7{
    public static void main(String[] args) {
        Scanner input=new Scanner(System.in);
        System.out.println("请输入第一个数");
        double a= input.nextDouble();
        System.out.println("请输入第二个数");
        double b= input.nextDouble();
        System.out.println("乘积="+a*b+"\n"+"和="+(a+b));
        System.out.println("差："+(a-b));
        System.out.println("除："+a/b);
        System.out.println("取余："+a%b);




    }
}
